Hydraulic regulator



De# 18 1934. E, H. WHITE l 1,984,558

HYDQLIC REGULATOR Filed Oct. 2, 1931 4 Sheets-Sheet 1'- LILI De@ 1 8,1934. E. H, WHITE HYDRAULIC REGULATOR Filed oct. 2, 1951 4 Sheets-Sheet2 @a 18 `1934. E. H. wH|TE 1,984,558

HYDRAULIC REGULATOR Filed Oct. 2, 1931 4 Sheets-Sheet 5 E. H. WHITE Dec.18, 1934.

HYDRAULIC REGULATOR 4 Sheets-Sheet 4 Filed Oct. 2, 1931 l0 will behydraulically operated.

Patented Dec. 18, 1934 i i UNITED STATES PATENT 'oFFrcaHYDRAULICREGULATOR Everett H. White, St. Paul, Minn. Application October2, v1931, Serial No. 566,520

23 Claims. (Cl. 611-52) 'Ihis invention relates to an hydraulicregulator the disclosure of Fig. 3, but showing parts in for the remotecontrol of devices which require different positions; v motive power toeiect their'operation, as, for ex- Fig. 5 is a detail sectional viewtaken as on line ample, heating plant dmpers; steam, water, oil, -5 inFig. 4; 5 or gas valves; circulating fans or blowers; auto- Fig. 6 is adetail sectional view taken as on line 5 ymatic stokers; intakeandl'xixing valves; etc. 6-6 in Fig. 3, parts being omitted;

An object of the invention is to provide a regu- Fig. 7 is a detailsectional view taken as on lator for the vremote control of devicesrequirline 7-7 in Fig. 3'; ing motive power to eifecttheir operation,which Fig. 8 is a detail sectional view taken substantially as on line8--8 in Fig. 6, parts being omitted; 10 A further object is to provide aregulator which Fig. 9 is a detail sectional view taken as on line willinclude hydraulically operated and electrical- 9--9 in Fig. 6; lyoperated mechanisms adapted to cooperateto Fig. 10 is a detail sectionalview taken as on line the accomplishment of the remote control of de-10-10 in Fig. 6; vices requiring motive power to effect their op- Fig.11 is a detail sectional view taken substanl5 eration. tiallyas on line11--11 in Fig. 8, parts being A further object is to provide an improvedreguomitted; y p lator that will supply ample power to operate Fig. 12is a diagrammatic view of a wiring sysheavy devices such asheavydampers, large valves, tem which the improved regulator employs,also etc., that require considerable power to effect their includingadditional features` of the regulator; 20

operation, and hold them in open positions with a and minimum electriccurrent consumption and at the Fig. 13 iS a diagrammatic VieW 0f aWiring SyS- same time cause them to automatically close, or tem employedfOr a medifled ferm 0fV regulator vbe situated at safety position, incase of current made according t0 the invention. the present viewfailure from any cause. also including. additional features of theregu-v 25 Further objects are to provide in the improvedlaliOrregulator, hydraulically operated mechanisms and With respect tothe drawingS .andthe numerelectrically operated mechanisms which presentals 0f referenee'tl'lereeu, l5 denotes a Support fOr novel features andcharacteristics of construction the regulator uDOrl Which the regulatOrframe both as individual entities of the regulatorand 01' housing 16 eaube suitably fastened aS by 30 in combination. l welding or otherwise.

With the above objects in view, as well as others The frame 0r heusing16 in turn suitably SuD- which will appear as the specication proceeds,VDertea easing 17 fOr llydraulieally Operated the invention comprises theconstruction, armechanisms 0f 'the regulator. Said easing aS rangementand combination of parts as now to be ShOWIl being positionedIlariially-Wliihln and Pal'- 35 fully described and as herelnafterto bespecically tially Without Said frame 0r housing and being maimed, itbeing understood that, the disclosure secured thereto by screwsindicated 18. A cover nereinis merely inustrative and intended in no forthe Casing 17 is denoted 19. and Said cover is 4 way ina limiting sense,changes in details of conattached tethe easing by SCIeWS 20- missible aslong as within the spirit of the invenat 21 a muto? 22 which is .suatedWithin. the tion and the scope of the claims which follow frame orhouslng 16 above said cover. The shaft 23 of said motor 22 extendsdownwardly through .ofhglsgggng drawings forming 9' part the cover 19and carries'a pumping gear 24 mesh- Fig. 1 is a vertical sectional viewoan hydraulic regulator in which thefeatures of the Vinvention areincorporated. taken as on line 1-1 in Fig. 2; l Fig. 2 is a top planview of the regulator o1" Fig. 1, partially broken away and partially in26 mounted in the casing 17, saidgears 24 and. 25 being situated in apocket 27 of said casing.

The interior of the casing 17 provides a desirably annular chamber. 28in which a piston or plunger 29 is reciprocatable. A connecting rod 30is attached centrally to the piston or plunger section; 29 and extendsupwardly throu gh the cover 19 4 Fig. 3 is a ldetail sectional viewtaken substannumeral 31 designating a packingin said cover:

tially as on vhneA 3-3 in Fig. 1; and about said connecting rod. Atensile coil struction and arrangement of parts being per- The cover 19suitably supports as indicated 40 ing with a pumping gear 25 upon ashort shaft 45,

Fig. 4 is a view corresponding generally with spring 32, within thechamber 28 and about the 55.

connecting rod 30, bears at one of its ends againstl the cover 19 and atits other end against the adjacent face of the piston or plunger 29, tonormally hold said piston or plunger at its furthest position from thecover 19, as discl'osed in Fig. 1.

A concavity 33 at the side of the chamber 28 adjacent the shaft 23 isopen to the upper portion of said chamber 28, and a passage 34 leadsiirst downwardly from said concavity and thence horizontally to thepocket 27, said passage 34 opening to rsaid pocket 27 at one side of thepumping gears 24 and 25 adjacent the location where'said gears mesh, aswill be more clear from Figs. 3, 6 and 7. At the opposite side of saidpumping gears, adjacent the location where they mesh, a passage 35 leadsaway from the pocket 27, rst horizontally and thence upwardly orvertically, the vertical portion of said passage 35 having therein acheck valve 36 for the pump including the gears 24 and 25, said checkvalve 36 being of ball type and being resiliently seated by a coilspring 37 engaging said valve and also engaging the cover 19, as will bemore clear from Figs. 3, 6, 7 and 10. The upper portion of the passage35 communicates with a port or slot 38, which in 'turn communicates witha passage 39 itself'leading to the lower portion of the chamber 28 andopening to the space of said chamber beneath the piston or plunger 29,as will be more clear from Figs. 1, 3, 6, 7, 8, and 10. The lowerportion of the pocket 27 is closed by a cover plate 40, and the gears 24and 25 are Adisposed in said pocket to pump fluid, indicated 41, fromthe chamber 28, through the concavity 33,Y the passage 34, the .passage35, the port or slot 38, and the passage 39 to the space of said chamber28 beneath the piston -or plunger 29, when the motor 22 is in operation.The cover plate- 40 is held to the casing 17 by screws 42, and a packingmember 43 between the casing and .cover plate effectually closes thepocket or pump cylinder 27. y

As will be clear from the descriptionv already given, the motor 22 isadapted to be driven to y force the fluid41, which may desirably be oil,

from the portion of the chamber 28 above the piston or plunger 29 to theportion of said chamber 28 beneath said piston or plunger, to thus causesaid piston or plunger to be actuated lengthwise of said chamber,against the action of the coil spring 32, from its position as in Fig. 1to position closer to the cover 19.

A by-pass for the fluid 41 leads from the space beneath the piston orplunger 29 to the space above said piston or plunger. As disclosed, saidby-pass includes a port 44 with which the space beneath the piston orplunger communicates, a small valve box 45 with opening from said port44 and imbedded in a wall of the casing 17, a passage 46 leadingupwardly or vertically from said valve box and with which the interiorof said box communicates by a valved outlet 47, a valve 48 for saidoutlet 47 and carried by a valve stem 49 extending upwardly through thepassage 46 and the cover 19, and a port or slot 50 at the upper portionof said passage. 46 and affording communication between said passage 46and the .gear pump will cause said piston or plunger to be elevated, inthe manner as already set forth, but that upon the moving of said valve48 to open position, the coil spring 32, which was compressed byelevationof the piston or plunger, will act to depress said piston orplunger, in the meantime forcing the uid from position in the chamber 28beneath the piston or plunger to position in said chamber-28 above saidpiston or plunger, said fluid being caused to flow through the port 44,the valve box 45, the outlet 47, the passage 46, and the port or slot50, constituting said by-pass for the iiuid.

A lever 51 is for operating devices which are in remote relation to theimproved regulator and which require motive power to effect theiroperation, examples of such devices being heating plant dampers; steam,water, oil, or gas valves; circulating fans or blowers; automaticstokers; intake and mixing valves; etc. Said lever 51 is, as shown,pivoted at its midlength, by means of a pin 52, between bifurcatedportions at the outer or upper end of an upright or post 53 having itsinner or lower end suitably supported upon the cover 19 as indicated at54. The end portions of said lever 51 include openings 55 for attachmentof the lever to devices to be operated, although any other convenientarrangement for associating said lever with said devices can beemployed. The upright or post 53 is situated adjacent one side of thecover 19, as best shown in Fig. 2, and one end portion of the lever 51extends outwardly from the casing 17, while the other end portion ofsaid lever 51 extends centrally across said casing above the same toproject beyond the casing at the side thereof opposite the upright orpost 53, as will be clear from Figs. 2, 3 and 4. Consequently, theportion of the lever 51 which extends across and above the casing 17,passes over the connecting rod 30 in the vertical plane thereof. andsaid mentioned portion of said lever and said connecting rod areattached to each other by a duplex connecting link 56, a pin 57affording pivotal connection between said link and said lever, and a pin58 aordingpivotal connection between said link and said connecting rod.

A desirably vertical web or wall 59 is, as disclosed, formed integrallywith the cover 19 to extend upwardly therefrom in a plane which isparallel with a vertical plane passed through the lever 51 and arrangedlengthwise thereof. A plate 60, desirably of metal, is supportedcontiguous with or adjacent to the surface of said web or wall 59opposite the connecting linkr 56, within the frame or housing 16 andabove the casing 17 and to reciprocable horizontally alongsaid web orwall, y means of a flange 61 integral with plate 60, and a flange 62integral with and ex'- tending downwardly from an insulating block 63pin 58 has an extension 67 thereon which passes,A

through the slots 65 and 66. See Figs. l to 5A It will be apparent thatupon upward and downward movement of the piston or plunger 29,

to impart corresponding movement to the pin 58 and its extension 67,said extension 67 will be moved along the slot to cause the plate 60 tobe reciprocated horizontaly along the web or wall 59, the oblique slot66, obviously, causing horizontal reciprocation of said plate 60 uponvertical reciprocation of said extension 67. The width of the obliqueslot 66 is desirably or preferably a triiie greater than the diameter orwidth of the extension 67, for a purpose which will be hereinafter setforth.

An insulating block 68 is seated against iiat buttons 69 between theplate 60 and said insulating block 68, and screws 70, which desirablypass through said flat buttons, attach said insulating block to saidplate.

An elongated, iiat contact strip 71 is attached in any suitable .mannerto the surface of the insulating block 68 which is opposite the plate60, said contact strip 71 desirably being horizontally disposed. AnL-shape contact member is also suitably attached to the insulating block68 and includes a vertical portion 72 which is arranged adjacent an endof the contact strip 71, the right end as shown in Figs. 3, 4 and 5, inslightly spaced relation to said contact strip. The vertical portion 72of the contact member is slightly thicker than is the contact strip 71,so that the surface of said vertical portion opposite* the insulatingblock` 68 is spaced somewhat farther from said insulating block than isthe surface of said contact strip opposite said insulating block, aswill be more clear from Fig. 5, and said outer surface of the verticalportion 72 is desirably rounded or curvilinear as shown in said Fig. 5,for a purpose which will hereinafter become evident.

The insulating block 63 suitably supports spaced apart terminals,denoted 73, 74, 75, 76, 77 and 78, respectively, and said terminals 76,77 and 78 suitably support contact clips, denoted 79, 80 and 81,respectively, each of which contact clips is in conductive engagementwith the corresponding supporting terminal. The contact clips 79, 80 and81 extend downwardly from the insulating block 63 and are adapted towipe over the contact strip 71 and the vertical portion 72 of thecontact member upon the insulating block 68, said contact clips 79, 80and 81 being resilient to normally engage the contact strip 71 but toride up over the curved outer surface of the Ver-l tical portion 72,when said portion rides under a contact clip, to thus be removed fromsaid contact strip 71, as will be more clear from Figs. 1, 3, 4 and 5.When the vertical portion' 72 is removed from the location of a contactclip, said clip assumes its normal position, either that of engagementwith the contact strip 71, or a position at the right hand side of saidvertical portion as in Figs. 3, 4 and 5, depending upon the workingcondition of the parts at a particular time and as will be herein laterdescribed.

An ordinary thermostatically responsive element 82, such as disclosed inmy Patent No. 1,263,497, granted April 23, 1918, in remote relation tothe device requiring motive power to effect its operation, as, forlinstance, in al room to be heated, is disclosed as a means for actuatinga switch, as shown a thermal switch 83, for the motor 22, and foractuating a mechanism, as shown a thermal mechanism 84, for controllingthe valve 48, but it is to be understood that actuating means other thanthermostatic actuating means can be substituted for the thermostaticallyresponsive element 82 illustrated. As

shown, the element 82 is 'not a thermostat, but is thermostaticallyactuated, in about the manner as is thevequivalent element of my patentwhich is identified, by a thermostatic device (not shown).

The thermal switch 83 includes a resistor 85 desirably consisting of asingle strand of wire having its two end portions connected to terminals8 6 upon a lower insulating member 87 and its intermediate portionlooped over an upper insulating member 88. The lower insulating member87 is as disclosed attached, by means of a screw bolt 89, to a bar 90,which bar is suitably attached to the bottom of the casing 17. The upperinsulating member 88 is as disclosed attached, by means of a rod 91, toone end of a lever 92 itself pivoted, as at 93, between ears of abracket 94 suitably supported upon the cover 19. 'I'he rod 91 isdesirably Xedly secured to said upper insulating member 88 and pivotallysecured to said Alever 92. The end portion 95 of the lever 92 at theside of the bracket 94 opposite the rod 91 xedly carries an insulatingelement 96 itself supporting a contact element 97 which constitutes themovable contact of a switch for the motor 22, said switch also includinga xed contact consisting of the contact element 98 insulativelysupported upon said cover 19. A coil spring 99 is attached to thebracket 94 and to the end portion 95 of the lever 92 to urge the movablecontact 97 toward the xed contact 98, and the resistor 85 when'contracted holds said contacts apart against the action of said coilspring, but when expanded allows said coil spring to ac t to move saidcontacts into engagement. See Figs. 1, 6, 7, 8, 11 and 12.

The thermal mechanism 84 includes a resistor 100 also desirablyconsisting of a single strand of wire having its two end portionsconnected to terminals 101 upon a lower insulating member 102 and itsintermediate portion looped over an upperinsulating member 103 andbetween said upper and lower insulating members. That is to say, theresistor 100 has one of its ends attached to a terminal on the lowerinsulating member 102, thence said resistor is looped over the upperinsulating member 103, thence said resistor is looped over the lowerinsulating member 102, thence over the upper insulating member, and soon, and the other endof said resistor is finally attached to the otherterminal on said lower insulating member 102. The lower insulatingmember 102 is as disclosed attached, by means of a screw bolt 104, to abar 105, which bar is suitably attached to the bottom of the casing 17.The upper insulating member 103 is as disclosed attached, by means of arod 106, to one end of a lever 107 itself piv-l oted, as at 108, betweenears of a bracket 109 suitably supported upon the cover 19. The rod 106is desirably xedly secured to said upper insulating member 103 andpivotally secured to said lever 107. The end portion 110 of the lever107 at the side of the bracket 109 opposite the rod 106 engages theupper end of the valve stem 49, and a coil spring 111 is for the purposeof urging the portion 110 of the lever 107 toward said valve stem 49.The resistor 100 when contracted holds the portion 111 in recededrelation to the valve stem 49, to thus allow the fluid 41 to readilyyremove the valve 48 from the outlet 47, but when ex'- panded allows thecoil spring lllfwhich is attached between the portion 110 of the leverl107 and a hook 112 upon the wall of the casing 17, to

act to move the valve 48 to closed position over.

the outlet 47, and to hold said valve closed. See Figs. 1, 6, 7, 8, 9,11 and 12. y

The hydraulic regulator and the lever 51 thereof motive power to effecttheir operation, as, for example, the draft and check dampers ofa'furnace; valves .controlling ilow of steam, water, oil, gas,

- or other fluid;v circulating fans or blowers; automatic stokers;intake and mixing valves or dampers; etc.

When the piston or plunger 29 is positioned as in Figs. 1, 2, 3 and 12,the operating lever 51 is positioned at one of its 'stationarypositions. When the piston or plunger 29 is at the top of its stroke,the position of the lever 51 will be reversed and said lever will bearranged at another of its rstationaryy positions. When the piston orplunger 29 is at location between bottom and top of its stroke, thelever 51 will be situated between the two stationary positionsmentioned. In short, when controlling any device requiring motive powerto eiect its operation, the position of the lever 51, or equivalent,will, obviously, determine the condition of the device being controlled.

Incoming wires 113 and 114 from a source of electrical energy lead to aAtransformer shown in Fig. 12 and including a primary 115 and a secondary116. One side of the secondaryv 116 of said transformer is connected bya lead wire 117 with the terminal 73, and the other side of saidsecondary is connected by a lead Wire 118 with the terminal 74.

A lead wire 119 extends from the terminal 73 to the movable contact 97,a lead wire 120 extends from the ilxed contact 98 to the motor 22, and alead wire 121 extends from said motor 22 'to the terminal 74.

As shown very clearly in Fig. 12, `the thermostatically responsiveelement 82 includes a lower portion adapted to wipe over spaced apartterminals, designated 122, 123 and 124, respectively. The terminal 76 isconnected to the terminal 122 by a lead vwire 125, the terminal 77 isconnected to the terminal 123 vby a lead wire 126, and the terminal 78is connected to the terminal 124 by a lead wire 127.

A lead wire 128 connectsv the thermostatically responsive element 82with the terminal 75,l and a `lead wire 129 connects said terminal 75with the lead wire 121.

A lead wire 130/'connects the contact strip 71 with one terminal o f theresistor 85, and a lead wire 131 connects the L-shape contact memberhaving the vertical portion 72 with the other terminal of said resistor85.

Alead wire 132 connects the lead wire 131 with one terminal of theresistor 100, and a lead wire 133 connects the lead wire 119 with theVother terminal of said resistor 100.

As shown in Fig. 12, the extension 67 of the pin 58 is at the bottom ofthe rslot 65, and the piston or plunger 29 and the lever 5l are-situatedas in Figs. 1 to 3. Also, in said Fig. 12, the thermostaticallyresponsive element 82,A as, for example, in a room to be heated, isdisclosed at the right hand side of the terminal 124, in slightly spacedrelation thereto, this being the position of said thermostaticallyresponsive element 82 when .the temperature of said room is at or abovea desired andpredetermined temperature. Also, in said Fig. 12, the plate60 is situated to locate the contact strip 71 in engagement with the andthe resistor 100, said circuit being traced from the secondary 116 ofthe transformer through the lead wire 117 to the terminal 73, thencethrough the lead wires 119 and 133 to and through the resistor 100,thence through the lead -wires 132 and 131 to and through the resistor85,

thence through the lead wire 130 and the contact strip 71 to the contactclip 81, thence through the terminal 78 and the lead wire 127 to theterminal 124, thence through the thermostatically responsive element 82,the lead wire 128 and the terminal 75, and thence through the lead wires129 and 121, the terminal 74 and the lead wir 118 back to the secondaryof the transformer. Upon the passage of current through said resistorsand 100, these are caused to expand longitudinally, in a well knownmanner,'to thus allow the coil spring 111 to 'act upon the end portion110 of the lever 107 to eectually move the valve 48 to closed positionover the outlet 47, and to allow the coil spring 99 to act upon the endportion of the lever 92 to carry the movable contact 97 into engagementwith the iixed contact 98, as already hereinbefore mentioned. Desirably,the resistor A-is composed of resistance wire of liner grade than theresistance wire composing the resistor 85, to thus insure that the'valve 48 will be seated at least as soon as the contacts 97 and 98 arebrought into engagement, and preferably an instant previous to theengagement of said contacts 97 and 98. Upon engagement of the contacts97 and 98, an electrical circuit'is completed through the motor 22, saidcircuit being traced from the secondary 116 through the lead wire 117 tothe terminal 73, thence through the lead wire 119 to and through saidcontacts 97 and 98, thence through thelead wire to said motor 22, thencethrough the lead wire 121 to the terminal 74, and thence through thelead wire 118 back to the secondary. Upon the resultant operation Aof.the motor 22, the valve 48 being closed as stated, rthe gear pumpforces fluid 41 to travel from position in the chamber 28 abovethe'pistonA or plunger 29'to position in said chamber below said pistonor plunger, in the manner as already set forth, to thus elevate thepiston or plunger, or, in other words, to move said piston or plungertoward the cover 19. As said piston cr plunger is so moved, theextension 67 upon the pin'58 causes the plate 60 to be slid, from righttoward left as shown in Figs. 3, 4, 5 and l2. Naturally, said plate 60carries the contact strip 71 and the vertical portion 72 of the L-shapecontact member along with it, and in due course s aid vertical portion72 will ride under the contact clip 81 and thus remove said contact clip81 from engagement with said contact strip 71.v 'Ihe distance the pistonor plunger 29 travels upwardly before causing the contact clip 81 toengage the vertical portion 72 and be removed from the contact strip 71will obviously depend upon the original setting of the parts 7l, 72 and81 relatively to each other. In the disclosure as made, the contact clip81 engages the vertical portion 72` and is removed from the contactstrip 71 when the lever 51 has reached a position adapted to actuate adevice to be controlled a predetermined amount. Upon removal of thecontact clip 81 ture of the room or space from the contact strip 71, thecircuit through the resistor 85, including said contact clip 81 and saidcontact strip 71, will be broken, and the motor 22 will cease itsoperation with the lever l positioned as set forth, but circuit throughthe resistor 100 will not be broken for the reason that said contactclip 81 .engages the vertical portion 72 before being removed from thecontact strip 71 to hold a circuit through said resistor 100 traced fromthe secondary 116 through the lead wire 117 to the terminal 73, thencethrough the lead wires 119 and 133 to and through the resistor 100,thence through the lead wires 132 and 131 and the L-shape contact memberhaving the vertical portion 72 to the contact clip 81, thence throughthe terminal 78 and thelead wire 127 to the terminal 124, thence throughthe thermostatically responsive element 82, the lead wire 128 and theterminal 75, and thence through the lead wires 129 and 121,the terminal74 and the lead wire 118 back to said secondary. Hence, when the motor22 ceases its operation with the piston or plunger 29so located,thevalve 48 will remain closed, and the fluid 4l trapped in the' chamber 28beneath said piston or plunger will cause the piston or plunger toremain in stationary position against the action of the coil spring 32tending to return said piston or plunger to position as in Fig. l, aswill be understood.

When the thermostatically responsive element 82 is in engagement withthe terminal 124, one of two things can happen. Either thetemperahavingsaid thermostatically responsive element 82 can rise to the desired andpredetermined temperature, as in Fig. 12, or the temperature of saidroom or space can fall to a temperature bringing said thermostaticallyresponsive element into engagement with the terminal 123, said element82 being adapted to engage said terminal 123 before becoming disengagedfrom said terminal 124. Supposing that the temperature of the room orspace rises to return the thermostatically responsive element 82 fromthe position as just described to its position as in Fig. 12, thecircuit including the resistor 100, and also including the element 82and the terminal 124, becomes broken to deenergize said resistor 100 andallow it to contract,

. to thus act upon the portion 110 of the lever 107 against the actionof the coil spring 111 and allow the valve 48 to be removed from itsseat over the outlet 47. Immediately, the coil spring 32 acts to returnthe piston or plunger 29 to position as in Fig. 1, the fluid 41 whichwas beneath said piston or plunger being by-passed to the space of thechamber 28 above the piston or plunger through the port 44, the valvebox 45, the outlet 47, the passage 46 and the port or slot 50constituting the by-pass. supposing, instead, that the temperature ofthe room or space falls to a temperature bringing 126, and the terminal123 instead of through the contact clip 81, the terminal 78, the leadWire 127 and the terminal 124 as before described. The resistor 100remains expanded, and the resistor 85 is caused to again expand to allowthe coil the thermostatically responsive element 82 into engagement withthe spring 99 to close the contacts 97 and 98 as before. Upon engagementof the contacts 97 and 98, the electrical circuit through-the motor 22is again completed, and the resultant operation of said motor forcesmore fluid 41 into the space of the chamber 28 below the piston orplunger 29, to thus further elevate said piston or plunger and slide theplate 60 still further toward the left in Figs. 3, 4, 5 and 12. In duecourse the vertical portion 72 will ride under the contact clip 80 andremove it from engagement with the contact strip 71. As before, thedistance the piston or plunger 29.travels to accomplish the operation,will depend upon the distance at which the contact clip 80 is originallyset from the vertical portion 72. In the disclosure as made, the contactclip 80 engages the vertical portion 72 and is removed from the contactstrip 71 when the lever i- 51 has reached a position adapted to stillfurther actuate a device to be controlled an additional predeterminedamount. Upon removal of the contact clip 80 from the Contact strip 71,the circuit through the resistor 85 is broken, as before stated, and themotor 22 ceases its operation with the lever 51 situated at the newposition, but circuit through the resistor 100 will not be brokenbecause of engagement between the contact clip 80 and the verticalportion 72, holding a circuit through said resistor 100 traced throughthe route as before described, except that the present circuit isthrough the contact clip 80, the terminal 77, the lead wire 126, and theterminal 123 instead of through the contact clip 81, the terminal 78,the lead wire 127, and the terminal 124. As before, when the motor 22ceases its operation -with the piston or plunger 29 so located, the

valve 48 will remain closed to trap the uid 41 beneath the piston orplunger to cause said piston or plunger to remain stationary against theaction of the coil spring 32.

When the thermostatically responsive element 82 is thus in engagementwith the terminal 123, the temperature of the room or space can rise toreturn said thermostatically responsive element to position out ofengagement with said terminal 123 and again in engagement with theterminal 124, or the temperature of said room or space can fall to atemperature bringing said thermostatically responsive element intoengagement with the terminal 122, said element 82 being adapted toengage said terminal 122 before becoming disengaged from said terminal123. Supposing that the temperature rises to carry the thermostaticallyresponsive element 82 from position where it engages the terminal 123 toposition where it engages the terminal 124 and is out of engagement withsaid terminal 123, the circuit including the resistor 100, and alsoincluding the element 82 and the terminal 123, becomes broken todeenergize said resistor 100 and allow it to contract, to thus act uponthe portion 110 of the lever 107 against the action of the coil spring111 and allow the valve 48 to be removed from its seat over the outlet47. The contact clip 81 being at the time mentioned to the right of thevertical portion 72 in spaced relation to said vertical portion, therewill be no circuit through said resistor 100 by the route beforedescribed including said contact clip 81,v even though thethermostatically responsive element 82 and the terminal 124 are inengagement, as will be evident. Immediately, the coil spring 32 acts toreturn the piston or plunger 29 toward the position as in Fig. 1, thefluid being by-passed to the space of the chamber 28 above the piston orplunger. When, however, the lvertical portion -72 is moved a sufiicientdistance upon its return toward normal position to engage the contactclip 81, the circuit through the resistor 100 and including saidvertical portion 72, contact clip 8l, terminal 124 and thermostaticallyresponsive element 82 will be remade, to allow the valve 48 to beimmediately moved to closed position, to thus locate the piston orplunger 29 and the lever 51 in the positions which these assume when thethermostatically responsive element 82 moves from its position as inFig. 12 to its position of engagement with the terminal 124, and asalready fully described. Thereafter, should the thermostaticallyresponsive element 82 move from its position of engagement with theterminal 124 to the position as in Fig. 12, or to position againengaging the terminal 123, the action as hereinbefore described will berepeated. Supposing, ture of the room or space falls to a temperaturebringing the thermostatically responsive element 82 into engagement withthe terminal 122, of course before becoming' disengaged from theterminal 123, circuit is continued through the resistor 100 and isremade through the resistor 85 through the route as described when thevthermostatically responsive element 82 first came into engagement withthe terminal 124, except that the present circuit is through the contactclip 79, the terminal 76, the lead wire 125, and the terminal 122instead of through the contact clip 81, the terminal 78, the lead wire127 and the terminal 124 as before described. The resistor remainsexpanded and the resistor 85 is caused to again expandto allow the coilspring 99 to'close the contacts 97 and 98 as before. .Upon engagement ofthe contacts 97 and 98, the electrical circuit through .the motor 22 isagain completed, and the resultant operation of said motor forces moreuid 41 into the space of the chamber 28 below the piston or plunger 29,to thus further elevate said piston or plunger and slide the plate 60still further toward the left in Figs. 3, 4, 5 and 12. In due course,the vertical portion 72 will ride under the contact clip 79 and removeit from engagement with the contact strip 71. As before, the distancethe piston or plunger 29 travels to accomplish the operation as justdescribed will depend upon the distance at which the contact clip 79 isoriginally set from the vertical portion 72. In the disclosure as made,the contact clip 79 engages the vertical portion 72 and is removed fromthe contact strip 71 when the lever 51 has reached reverse to that inFigs. 1, 2, 3 and 12, with the piston or plunger 29 at the top lof itsstroke. Upon removal of the contact clip 79 from the contact strip 71,the circuit through the resistor 85 is broken, as before stated, and themotor 22 ceases its operation with the lever 51'situated at the newposition, but circuit through the resistor 100 will not be brokenbecause of engagea ment between the contact clip 79 and ,the verticalportion 72, holding a circuit through said resistor 100 traced throughthe route as 'before described, except that the present circuit isthrough lthe contact clip 79, the terminal 76, the lead wire 125, .andthe terminal 122. As

instead, that the tempera-l When the thermostatically responsive`element 82 is thus in engagement with the terminal 122 and thetemperature rises to carry said element from position `where it engagessaid terminal 122 to position where it engages the terminal 123 and isout of engagement with said terminal 122, the circuit including theresistor 100, and also including the element 82 and the terminal 122,becomes broken to de-energize said resistor l100 and allow it tocontract, to thus act upon the portion of the lever 107 against theaction of the coil spring 111 and allow the valve 48 to be removed fromits seat over the outlet 47. The contact clip 80 being at the timementioned to the right of the vertical portion 72 in spaced relation tosaid vertical portion, there will be no crcuit through said resistor 100by the route before descrbednincluding said contact clip 80, even thoughthe thermostatically responsive element 82 and the terminal 123 are inengagement, as will be evident. Immediately, the coil spring 32 acts toreturn the piston or plunger 29 toward the position as in Fig. 1, theiiuid being by-passed to the space of the chamber 28 above the piston orplunger. When the vertical portion 72 is moved a suilicient distancetoward normal position to engage the contact clip 80, the circuitthrough the resistor 100 and including said vertical portion 72, contactclip 80, terminal 123 and thermostatic element 82 will be remade, toallow the valve 48 to be immediately moved to closed position, to thuslocate the piston or plunger 29 and the lever 51 in the positions whichthese assume when the thermostatically responsive element 82 moves fromits position of engagement with the terminal Y 124 to its position ofengagement with the terminal 123, and as already described.'I'hereafter, should the thermostatically responsive element 82 movefrom its position of engagement with the terminal 123 to its position ofengagement with the terminal 124 and out of engagement with the terminal123, or to position again engaging the terminal 122, the action ashereinbefore described will be repeated.

'I'he arrangement is such that engagement of the thermostaticallyresponsive element 82 with the terminal122 provides the maximum heatproducing condition of a device to be operated; that is when the pistonor plunger 29 is at the top of its stroke and the lever 51 is incorresponding position. It is evident that the present regulator canoperate a device requiring motive power to effect its operation in agreater or less number oi' stages than illustrated and described, merelyby increasing or decreasing the number of contact clips such as 79, 80and 81 and the number of terminals such as 122, 123 and 124.

In the disclosure as made, the lever 51 is capable of assuming fourdiil'erent and predetermined stationary positions.

Hereinbefore ithas been stated that the width of the oblique slot 66in'the plate 60 is a trifle greater than the diameter or width of theextension 67 on the pin 58 which ridesy in said oblique slot 66. Theobvious purpose of this feature is to allow lost motion in the operationo1' said plate 60.: Upon the movement of the plate 60 from right towardleft in Figs. 3, 4, 5 and 12, during the upstroke of the pistonorf'plunger 29, the various stationary positions of said piston orplunger, other than the position as in Fig. 1, are dependent upon thelocations at which the verti- Vcal portion 72 of the L-shape contactmember from the contact strip 71, whereas upon the movement of saidplate from left toward right in said Figs. 3, 4, 5 and 12, during thedownstroke of the piston or plunger 29, the various stationary positionsof said piston or plunger, other than the position as in Fig. 1, aredependent upon the locations at'which said vertical portion 72 engagesthe opposite side of each of said contact clips 79,

and 81. By the provision of the lost motion in the operation of theplate 60 as set forth, the arrangement can be such that the piston orplunger 29 can be stopped at exactly the same locations upon thedownstroke thereof as upon the upstroke, as will be obvious. Any otherrconvenient arrangement for accomplishing this result can besubstituted.

Attention is called to the fact thatwhen the resistor is out of circuit,and the motor 22 is inoperative, while the resistor is energized and thevalve 48 is closed, the current supplied to said resistor 100 is greaterthan when 'the current passes through said resistor 85, and the motor 22is operative, as well as through said resistor 100. Thus, when thepiston or plunger 29 is in any one of its stationary, elevatedpositions, the resistor 100 is constantly energized to -suiiicientextent to assure that there will be no interference with the action ofthe coil spring 111 in holding the valve 48 tightly closed, as will beunderstood.

In Fig. 13 I have illustrated a modied type of hydraulic vregulatorvmade according to the invention. As there shown, a lever 51a, similarto the lever 51, is capable of assuming two different and predeterminedstationary positions, corresponding to those in which 'the piston orplunger 29 is at the limit of its downstroke as in Figs. 1 and 12, andat the limit of its upstroke.

With reference to said Fig. 13, 67a denotes an extension, similar to theextension 67 and similarly supported, ridable in a, vertical slot 65a ina web or wall 59a, which web or Wall 59a may be similar to the web orwall 59. 'I'he lever 51a is as shown pivoted at 52a upon an upright orpost 53a which may be supported in the same manner as is the upright orpost 53.

The present form of the invention includes a single thermal device 134which replaces both the thermal switch 83 and the thermal mechanism 84of the form of the invention as hereinbefore described. The thermaldevice 134 includes a resistor 135 carried by lower and upper insulatingmembers, denoted 136 and 137, in substantially the manner as before setforth in connection with both the resistor 85 and the resistor 100. Thelower insulating member 136 may be anchored in any suitable way (notshown),

vand the upper insulating member 137 is secured by a rod 138 to one endof a lever 139, the connection between said rod and lever desirablybeing, as disclosed, a pivotal connection. The lever 139 is pivotallysupported, as at 140, upon a bracket 141 itself xedly mounted in anyconvenient manner. The end portion 142 of the lever 139 at the side ofthe pivot 140 opposite the rod 133, carries an insulating element 143upon which is arranged a contact element 144 constituting the movablecontact of a switch also including a exible contact consisting of acontact eleshown in Fig. 13, in about the manner in which said valvestem 49 is engaged by the portion 'of the lever 107, by the portion 142of the lever 139. A coil spring 148 is attached to the portion 142 o fsaid lever 139 and to a fixed part to be capable of urging said portion142 against the valve stem 147 and the vmovable contact 144 toward theflexible contact 145. v

The arrangement is such that when the resistor is contracted, the endportion 142 of the lever 139 is held in receded position, against theaction of the coil spring 148, both to allow the valve carried by thestem 147 to freely open, and to cause the movable contact 144 to be freeof the xed contact 145. When, however, the resistor 135 is expanded, thecoil spring 148 is allowed to act to hold the .stem 147 in positionclosing its valve, and to hold the movable contact 144 in engagementwith the flexible contact 145, provided said iiexible contact is in itsnormal or unsprung condition.

The circuit for the hydraulic regulator of Fig.

13 4includes incoming lead wires 149 and 150,'

which may correspond to the lead wires 117 and 118 of Fig. 12.

The lead wire 149 extendsto the motor 22a, corresponding to the motor 22and similarly operating a piston or plunger (not shown) controlling theextension 67a. A lead wire 151 extends from said motor 22a to theresilient Contact 145, and the lead wire 150 connects with the movablecontact 144.

A thermostatic element 82a, which may be similar or equivalent to theelement 82 already described, is adapted to engage a terminal 152 whenthe room or space having said element 82a is calling for heat, and'to bedisengaged from said terminal when said room or space reaches a desiredand predetermined temperature, as will be understood. A lead wire 153connects the lead wire 149 with one terminal of the resistor 135, a

lead wire 154 connects the other terminal of said resistor with aterminal 155, and a lead wire 156 connects said terminal with theterminal 152. A lead wire 157 connects the thermostatic element 82a witha terminal 158, and a lead wire 159 connects said terminal 158 with thelead wire 150.

Supposing the piston or plunger, such as 29, to be positioned as in Fig.1, so that the extension 67a is at the lower end of the slot 65a.instead of at the upper end of said slot, as said extension 67a is shownin Fig. 13, andthe lever '51a is correspondingly positioned when theroom or space calls for heat 4and the thermostatic element 82a as aconsequence engages the terminal 152. Upon the coming into engagement ofsaid element and terminal, a circuit is set up through the resistor 135,said circuit being traced from the incoming lead wire 149 to the leadwire 153, thence through the resistor 135, thence through the lead wire154, the terminal 155 and the lead wire 156 to the terminal 152, andthence through' the thermostatic element 82a, the lead wire 157, theterminal 158, and the lead wire 159 to the incoming lead wire 150. Thusthe resistor`135 is energized and caused to expand longitudinally toallow the coil spring 148 to act both to close the valve (correspondingto the valve 48 of Fig. 9) ca rriedby the stem 147, and to cause themovable contact 144 to engage the flexible or resilient contact 145,said contacts 144 and 145 coming into engagement preferably no soonerthan said valve is actually seated.

Upon the coming into engagement of the contacts 144 and 145. the motor22a is energized, and

operates to elevate the piston or plunger, such as 29, so that theextension 67a is moved from position at the lower end of the slot 65a toposition at the upper end of said slot and the lever 51a iscorrespondingly positioned, as in said Fig. 13.

Mechanism for breaking the motor circuit at the switch consisting of thecontacts 144 and 145 when the extension 67a approaches the limit of itsupstroke includes a lever 160 which as shown is pivoted on the Web orwall 59a at 161. The longer leg 162 of said lever 160 engages one end ofa link 163, the opposite end of said' link engaging the iiexible orresilient contact element 145 which normally causes said leg 162 toengage van adjustable stop 164, at the side of said leg 162 opposite thelink 163, to thus hold the shorter leg 165 of said lever 160 in the pathof movement of the extension 67a.

In Fig. 13, the thermostatic element 82a has engaged thetterminal 152 inresponse to a call for heat by the room or space, the motor 22a and theresistor 135 have been actuated to elevate the piston or plunger, andthe extension 67a, movable with theplunger, has reached its upstroke andhas pushed the shorter leg 165 upwardly to swing the longer leg 162downwardly, and thus removed the contact 145 from the contact 144 tobreak the motor circuit. As is evident, the circuit through the resistor135 remains made to keep said resistor energized, and as a consequencethe valve (not shown) carried by the stem 147 remains closed to causethe piston or plunger and the extension 67a to remain elevated, as saidextension 67a is shown in Fig. 13, the lever 51a being in position tocorrespond. I'he parts will,

obviously remain lin the positions as illustrated and described asA longas the room or space is calling for heat and the thermostatic element82a is in engagement with the terminal 152, the motor 22a of coursebeing idle.

When the room or space reaches the desired and predeterminedtemperature, and the thermostatic element 82a resultantly becomesremoved from the terminal 152, to break the circuit having the resistor135, 'said resistor becomes de-energized and as a consequence contractsto move the portion 142 o f the lever 139 to receded position allowingthe valve carried by the stein 147 to freely open/and causing thecontact element `144 to Vbe moved upwardly a slight distance. VUpon thereceding movement of the portion 142 of the lever 139, the coil spring(not shown), such as 32, acts lto push the piston or plunger, and withit'the extension 67a, outwardly. or downwardly, the lever 51a havingmovement to correspond, while theuld is bypassed, in the manner ashereinbefore described, from the space beneath the piston or plunger tothe' space above said pistonor plunger. Upon downward movement of theextension 67a, this clears Athe shorter leg 165 of the lever 160,*,andimmediately the contact 145, by reason of its resiliency, moves towardthe contact-144, pushing the longer leg 162 against the adjustable stop164. But in view of the fact that the movable contact 144-has beencaused to recede by reason of the contraction of the resistor 135, asalready described, the contacts 144 and 145 are out of engagement whenthe piston or plunger is positioned asin Fig. 1, to correspondinglysituate the extension 67a and the lever 51a.

Evidently, when the parts are situated as in Fig. 13, and contact is'then broken at the thermostatic element 82a and the terminal 152, thepiston or plunger is moved by the coil spring to trolling instrumentcontacts.

its furthest outward or downward position, as in Fig. 1, and theextension 67a is moved to the end of the slot 65a opposite the end atwhich said extension is shown in said Fig. 13, while the lever 51a ispositioned as in Fig'. 1.

Attention is called to the fact that the hydraulic regulator of Fig. 13'can, generally speaking, remotely control devices requiring motive powerto effect their operation in the various manners as described inconnection with Figs. 1` to 12.

It will be appreciated that the employment of thermal elements, such as83, 84 and 134, directly responsive in their operation to expanding andl contracting action of resistance elements, such as B5, 100 and 135,themselves expanding and contracting immediately upon vreceiving flow ofcurrent, makes provision for efficient operation of the regulator,the'switch for the motor 22 or 22a and the by-pass valve closingpractically instantaneously with the closing of the circuits controllingsaid resistance elements, and opening practically instantaneouslywiththe breaking of said circuits. Employment of the non-inductiveresistance elements allows operation of the hydraulic regulator bycontrolling circuits therefor which can incorporate delicate and fineelectrical contacts, especially those engaged by the element 82 or 82a,for the reason that the operating current required by said resistanceelements to accomplish theirfeicient operation in the regulator does nothave to Ieirceed more than a few watts, which, owing through anon-inductive circuit, causes practically no arcing whatever at the con-The arrangement as herein disclosed and described is a great andvaluable improvement over arrangements heretofore in vogue for such workas temperature regulation and humidity control, and my presentarrangement is also invaluable for a variety of other uses.

One of the many valuable features of the pres- Ient hydraulic regulatoris that its mechanical arrangement is such that by adding or removingcircuit;v breaker clips and control' or regulator circuit terminals, thenumber of different positions 'of manipulating mechanisms, such as thelever 51, can be increased or decreased without necessity for materialchanges in the general mechanism.

Especial attention is called to the fact that the present hydraulicregulator is so constructed that should the electrical operating currenttherefor fail, the .parts of said regulator can automatically situatethemselves at the safety posi- .tion of a device'to be operated. That isto say,

and referring to the disclosures of both forms of the invention asdescribed, upon failure of the operating current, all of the resistors85, 100 and 135 will of course be de-energized, to obviously allow thepiston or plunger 29 to be situated at the'minimum heat producing.condition of the levers 51 and 51a, as in Figs. 1, 2, 3 and 12.

What I claim is:

1. In a regulator for the remote control of a device requiring motivepower to effect its operation, hydraulically operated mechanismcomprising a iluid containing cylinder, a piston therein, a pump forforcing fluid into one end portion of said cylinder to move said pistonlongitudinally of the cylinder toward the opposite end portion thereof,means in said opposite end portion of the cylinder for urging saidpiston longitudinally of said cylinder in direction opposite that inwhich the 'piston is moved by said fluid, a motor for actuating saidpump,'an operating Lacasse be closed when the corresponding remotelycon-A trolled electrical circuit is made, and means actuateol by saidpiston for breaking said motor operating circuit as ly controlledelectrical circuits while leaving said valve closed, said meanscontrolled by each of said remotely controlled electrical'circuits beingadapted to cause said valve to open when the corresponding'remotelycontrolled electrical circuit is broken.

2. The combination as specified in claim l, wherein said means actuatedby said piston for breaking said motor operating circuit as made by eachof said remotely controlled electrical circuits while leaving said valveclosed includes a plurality of spaced apart contact clips, one for each.ci said remotely controlled electrical circuits, a contact strip adaptedto be situated in fai) Ill

eacli oi said remotely controlled electrical circuits and to wipe saidcontact clips, and a contact element also adapted to be situated in eachof said remotely controlled electrical circuits and to wipe said contactclips and to remove them from said contact strip, said contact elementbeingconnected in series with said means ior controlling said valve andin parallel with said means for making said motor operating circuit,

and said contact strip being connected in series with both said meansfor controlling said valve and said means for making said motoroperating circuit.

3. in a regulator for the remote control of a device requiring motivepower to eilect its operation, the combination with an hydraulicallyoperated mechanism including a pump and means actuated by saidmecbanismand oper- `ative upon said device, of a motor for driving saidpump to actuate said mechanism, an operating electrical circuit for saidmotor,a remotely controlled electrical circuit, means in said remotelycontrolled electrical circuit for making said motor operating circuit,and means responsive to said hydraulically operated mechanism forbreaking sai'd motor operating circuit when said mechanism is situatedin any predetermined one oi -a plurality of diierent stationarypositions said mechanism is capable oi assuming.

. d. In a regulator for the remote control of a devlcerequiring motivepower to effect its operation, the combination withan hydraulicallyoperated member and means actuated by said member and operative uponsaid device, of a. pump adapted to force iiuid to actuate said member inone direction, a motor for driving said pump, means independent of saidpump for actuating said member in opposite direction, a valve fortrapping fluid at a side of said member to thus preclude operation .ofthe member'` by said independent means, an operating electrical circuitfor said motor, c. remotely `controlled electrical circuit, means insaid remotely controlled electrical circuit for making said motoroperating circuit, means responsive to actuation of said hy-ldraulically operated member for breaking said motor operating circuit,and means controlled by made by each oi said remote- 'for concurrentlycausing said valve said remotely controlled electrical circuit iorcontrolling said valve, said motor operating circuit being made onlywhile 'said valve is in closed position.

5. 1n a regulator for the remote control oi a device requiring motivepower to effect its operation, the combination with an hydraulicallyoperated member and means actuated by said member and operative uponsaid device, or" a pump adapted to force iiuid to actuate mid. membervin one direction, a 4motor for driving said pump,

means independent of said pump for actuating said member in oppositedirection, a valve for trapping fluid at a side of said member to thuspreclude operation of the member by said independent means, anoperatingelectrical circuit for said motor, a remotely controlled electricalcircuit, means in said remotely controlled electrical circuit for makingsaid motor operating circuit, means responsive to actuation 'of saidhydraulically operated member for breaking said motor operating circuit,means'ior controlling said valve, and a device controlled by saidremotely controlled electrical circuit for controlling said lastmentioned means, said valve being in closed position at all times whilesaid motor operating circuit is made. i

6. in a regulator fortlie remote control of a device requiring motivepower to eiiect its operation, the combination with an hydraulicallyoperated member and means actuated by said member and operative uponsaid device, of a pump adapted to force duid to actuate said member inone direction, a motor for' driving said pump, means independent of saidmotorand pump for actuating said member in opposite direction, a valvefor trapping fluid at a side of said member to preclude operation of themember by said independent means, an operating electrical circuit forsaid motor, means for controlling said valve, a remotely controlledelectrical circuit, means in said remotely controlled electrical circuitfor making said motor operating circuit and closed, and means responsiveto actuation of said hydraulically operated member for breaking saidmotor operating circuit while allowing said valveto remain closed, saidvalve being adapted to become opened upon the breaking oi the remotelycontrolled electrical circuit which caused said valve to becomeclosed.

7. in: a regulator for the remote control of a device requiring motivepower to eect its operation, the combination with an hydraulicallyoperated member and means actuated by said member and operative uponsaid device, of a pump adapted to force iiud to actuate said member inone direction, a motor for driving said lpump, means independent of saidmotorv and pump for actuating said member in-opposite direction, a valvefor trapping iiuid at a side of to become remotely controlled elecmotoroperating circuit and for concurrently causing said valve to becomeclosed,` means responsive to actuation of said hydraulically operatedmember for breaking said motor operating circuitwhile allowing saidvalve to remain closed, said valve being adapted to become opened uponthe breaking ci the remotely controlled electrical circuit which causedsaid .valve to become closed, whereby to permit actuation of saidhydraulically operated member by said independent means, and means forcausing said valveto again become closed responsively to actuation ofsaid member by bsaid independent means,

8. In a regulator for the remote control of a device requiring motivepower to effect its operation, the combination with an hydraulicallyoperated member and means actuated by said member and operative uponsaid device, of a pump adapted to force fluid to actuate said member inone direction, a motor for driving said pump, means independent of saidmotor and pump for actuating said member in opposite direction, a valvefor trapping fluid at aside of said member to preclude operation of themember by said independent means, an operating electrical circuit forsaid motor, means for controlling said valve, remotely controlledelectrical circuits, means in said remotely controlled electricalcircuits ior making said motor operating circuit and for concurrentlycausing said valve to become closed, means responsive to actuation ofsaid hydraulically operated member when actuated by said motor and pumpfor breaking said motor operating circuit while allowing said valve toremain closed, said valve being adapted to become opened upon thebreaking of the remotely controlled electrical circuit which caused saidvalve to become closed, whereby to permit actuation of saidhydraulically operated member by said independent means, and means forcausing said valve to again become closed responsively to actuation ofsaid means.

9. In a regulator for the remote control of a device requiring motivepower to eiect its operation, the combination with an hydraulicallyoperated memberand means actuated by said member and operative upon saiddevice, of a pump /adapted to force fluid to actuate said member in onedirection, a motor for driving said pump, means independent of saidmotor and pump for actuating said member in opposite direction, a valvefor trapping fluid at a side of said member to preclude operation of themember by said independent means, an operating electrical circuit forsaid motor, means for controlling said valve, remotely controlledelectrical circuits, means in said remotely controlled'electricalcircuits for making said motor operating circuit and for concurrentlycausing said valve to become closed, means responsive to actuation ofsaid hydraulically operated member when actuated to a predeterminedposition by said motor and pump for breaking said motor operatingcircuit while allowing said valve to remain closed, said valve -beingadapted to become opened upon the breaking of the remotely controlledelectrical circuit which caused said valve to become closed, whereby topermit actuation of said hydraulically operated member by saidindependent means, and means for causing saidvalve to again becomeclosed responsively to actuation of said member by said independentmeans.

10. In a regulator for the remote control of a device requiring motivepower to effect its operation, the combination with an hydraulicallyoperated member and means actuated by said member and operative uponsaid device, of a pump adapted to force fluid to actuate said member inone direction, a motor for driving said pump, means 'independent of saidmotor and pump i'or actuating said member in opposite direction, a valvefor trapping uid at a side of member by said independent said member topreclude operation of the member by said independent means, an operatingelectrical circuit for said motor, means for controlling said valve,remotely controlled electrical circuits, a iixed contact member in eachof said remotely controlled electrical circuits, a movable contactmember common to all of said remotely controlled electrical circuits forsuccessively engaging said xed contact members to each time make saidmotor operating circuit and cause said valve to become closed, meansresponsive to actuation of said hydraulically operated member whenactuated to a predetermined position by said motor and pump for breakingsaid motor operating circuit while allowingsaid valve to remain closed,

'whereby said motor and pump can actuate said hydraulically operatedmember in step by step movements'in said one direction. by successiveengagement of said movable contact member with said fixed contactmembers, said valve being adapted to become opened upon the breaking ofthe remotely controlled electrical circuit which caused said valve tobecome closed, except when said movable contact member is engaging a xedcontact member in the series to make said motor operating circuit, andmeans for causing said valve to again become closed responsively toactuation of said member by said independent means.

1l. In a regulator for the remote control o1' a device requiring motivepower to effect its operation, a member, a pump for actuating saidmember in one direction, a motor for actuating said pump, positedirection, a valve for precluding operation of said member by said lastmentioned means, an operating electrical circuit for said motor,remotely controlled electrical circuits, means in each of said remotelycontrolled electrical circuits for making said motor operating circuitand for simultaneously closing said valve, means actuated by said memberwhen driven by said pump for breaking said motor ope ting circuit whileleaving said valve closed, an means operative upon the breaking of theremotely controlled electrical circuit which caused said valve to beclosed for opening said valve, to thus allow said member to be actuatedin said opposite direction.

12. In a regulator for the remote control of av device requiring motivepower to effect its operation, a member, a pump for actuating saidmember in one direction, a motor for actuating said pump, means foractuating said member in opposite direction, a valve for precludingoperation of said member by said last mentioned means, an operatingelectrical circuit for said motor, remotely controlled electricalcircuits, means in each of said remotely controlled electrical circuitsfor making said motor operating circuit and for simultaneously closingsaid valve, means actuated by said member when driven by said pump forbreaking said motor operating circuit while leaving said valve closed,means operative upon the breaking of the remotely controlled electricalcircuit which caused said valve to be closed for, opening said valve, tothus allow said member to be actuated in said opposite direction, andmeans for again closing said valve when said member` means for actuatingsaid member in op.

cylinder towardthe opposite end portion thereof, means in said cylinderfor urging said piston longitudinally of said cylinder in directionopposite that in which the piston is moved by said fluid, a motor foractuating said pump, an operating electrical circuit lior said motor,remotely controlled electrical circuits, means ineach of said remotelycontrolled electrical circuits for closing said motor operating circuit,a Toy-pass for allowing dow of -fiuid from said end portion of saidcylinder and past said piston into the opposite end portion of thecylinder, a valve for controlling said by-pass, vand means in each ofsaid remotely controlled electrical circuits for controlling said valve,said valve being in closed position at all times while said motoroperating circuit is closed.

14. 1n a regulator for the remote control of a device requiring motivepowerto-eect its operation, a member -ior actuating said device, a

pump for actuating said member in one direcments, means operative undercertain conditions to preclude actuation oi said member in directionopposite that in which the member is actuated by said pump, and means.operative under other conditions for allowing said member to beactuated in said `opposite direction in step by step movements thereverse of the step by step movements rst mentioned.

l5. 1n a regulator for. the remote control of a device requiring motivepower to eiect its operation, a member for actuating said device, a pumpfor forcing fluid to actuate said member in one direction, a motor foractuating said pump, means for actuating said member in oppositedirection, an operating electrical circuit for said motor, remotelycontrolled electrical circuits each adapted to be closed to close saidmotor operating circuit, said motor operating circuit being adapted tobe successively closed bythe closing in a predetermined succession ofsaid remotely controlled circuits whereby to actuate said member in saidone direction in a plurality of step by step movements, a valveoperative under certain lconditions to trap fluid at a side 4of said-member to thus preclude actuation of said member in direction oppositethat in which the member is actuated by said pump, and means foractuating said valve under other conditions to allow said member to beactuated in said opposite direction in reverse step by step movementssubstantially `equal to the step by step.move.

ments rst mentioned.

16. In a regulator for the remote control oi a device requiring motivepower to effect its operation, a member for actuating said device, a

pump for forcing fluid to actuate said member in one direction, a motorfor actuating said pump, means for actuating said member in oppositedirection, an operating electrical circuit for said motor, a remotelycontrolled electrical circuit for controlling said motor operatingcircuit, a valve adapted to be closed under certain conditions topreclude actuation of said member in direction opposite that in whichthe member is actuated by said pump, and means for opening said valvelil under other conditions to allow said member to be actuated in saidopposite direction to a predetermined extent, said valve being closed atall times while said motor is operating.

17. 1n a regulator for the remote control of -a device requiring motivepower to effect its operation, a member for actuating said device, apump for forcing iiuid to actuate said member in one direction, a motorfor actuating said pump, means for actuating said member in oppositedirection, an operating electrical circuit for said motor, a remotelycontrolled electrical circuit for closing said motor operating circuit,means actuated by said member for opening said motor operating circuit,a valve adapted to be closed under certain conditions to precludeactuation of said member in direction opposite that in which the memberis actuated by said pump, and means for opening said valve under otherconditions to allow said member to be actuated in said oppositedirection, said valve being closed at all times while said motor isoperating.

18. In a regulator for the remote control of a device requiring motivepower to eiect its operation, the combination with mechanism for movingsaid device both to an operating and to a safety position, of a motorfor actuating said mechanism to move said device to said operatingposition, means independent oi said motor for actuating said mechanismto move said device to said safety position, a member for controllingthe operations of said mechanism by both said motor and said independentmeans, an operating electrical circuit for said motor, a remotelycontrolled electrical circuit, means in said remotely controlledelectrical circuit actuable when said circuit is closed to energize saidmotor to position said member so that said motor can actuate saidmechanism to move said device to said operating position and so thatsaid member can thereafter cause the device to remain in said operatingposition as long as said remotely controlled electrical circuit remainsclosed, said last mentioned means being actuable when said remotelycontrolled electrical circuit is deenergized to position said member sothat said independent means can actuate said mechanism to move saiddevice to said safety position, and means for breaking said motoroperating circuit when said mechanism has moved said device to saidoperating position.

19. In a regulator ,for the remote control of a device requiring motivepower to effect its operation, the combination with mechanism for movingsaid device both to an operating and to a safety position,A of a motorfor actuating said mechanism to move said device to said operatingposition, means independent of said motor for actuating said mechanismto move said device to said safety position, a member 'for controllingthev operations oi said mechanism by both said motor and saidindependent means, an operating electrical circuit for said motor, aremotely controlled electrical circuit, means inv said remotelycontrolled electrical circuit actuable to position said member so thatsaid motor can actuate said mechanism to move said device to saidoperating position to be there retained by said member, said lastmentioned means also being actuable to position said member so that saidindependent means can actuate said mechanism to move said device to saidsafety position, and means for breaking said motor operating circuitwhen said mechanism has moved said device to said operating position.

20. In a regulator for the remote contrl of a device requiring motivepower to eiect its operation, the combination with hydraulicallyoperated mechanism for moving said device both to an operating and to asafety position, said hydraulically operated mechanism including apump,*of a motor for driving said. pump to actuite said mechanism tomove said device to said operating position, means independent of saidmotor and pump for actuating said mechanism to move said device to saidsafety position, a valve for controlling the operations of saidmechanism by both said pump and said independent means, an operatingelectrical circuit for said motor, a remotely controlledelectricalcircuit, means in said remotely controlled electrical circuit actuableto position said valve so that said pump can actuate said mechanism tomove said device to-said operating position to be there retained by:said valve, said last mentioned means also being actuable to positionsaid valve so that said independent means can actuate said mechanism tomove said device to said safety position, and means for breaking saidmotor operating circuit when said mechanism has moved said device tosaid operating position.

21. In airegulator for the remote control of a device requiring motivepower to effect its operation, the combination with hydraulicallyoperated mechanism for moving said device both to an operating and to asafety position, said hydraulically operated mechanism including a pump,of a motor for driving said pump to actuate said mechanismto move saiddevice to said operating position,v meansindependent of said motor andpump l for actuating said mechanism to move said device to said safetyposition, a valve for vcontrolling the operations of said mechanism byboth said pump and said independent means, an operating electricalcircuit for said motor, a remotely controlled electrical circuit, meansin said remotely controlled electrical circuit actuable when saidcircuit is closed to energize said motor to position said'valve sothat'said pump can actuate said mechanism to move said device to saidoperating position and so that said valve can retain the device in saidoperating position as long as said remotely controlled electricalcircuit remains energized, said last mentioned means being actuable whensaid remotely controlled elec- "trical circuit is deenerglzed toposition said `valve so that said independent means can actuate saidmechanism to move said device to said safety position, and means forbreaking said motor operating circuit when said mechanism has moved saiddevice to said operating position.

22. In a regulator for the remote control of a devicerequiring motivepower to eifect'its operation, the combination with mechanism for movingsaiddevice both to a plurality oi diierent operating positions and to asafety position,` of a motor for actuating said mechanism to move saiddevice from said safety position successively to each of said operatingpositions, means independentof said motor for actuating said mechanismto move said device successively from one of said operating positions toanother and to said safety position, a member for controlling theoperations of said mechanism by both said motor and said independentmeans, an operating electrical circuit for said motor, a plurality ofremotely controlled electrical circuits, including a remotely controlledelectrical circuit for each of said operating positions, means in eachremotely controlled electrical circuit actuable when the correspondingremotely controlled circuit is closed to energize said motor to positionsaid member so that said motor can actuate said mechanism to move saiddevice to the corresponding operating position and so that said membercan cause said device to be there retained, said last mentioned meansbeing actuable when all of said remotely controlled electrical circuitsare deenergized to position said member so that said independent meanscan actuate said device to said safety position, and means for breakingsaid mtor operating circuit when said mechanism-is moved by said motorto position said device in an operating position.

23. In a regulator for the remote control of a device requiring motivepower to effect its operation, the combination with hydraulicallyoperated mechanism for moving said device both to a plurality ofdifferent operating positions and to a safety position, saidhydraulically operated mechanism including a pump, of a motor fordriving said pump to actuate said mechanism to move said device fromsaid safety position successively to each of said operating positions,means independent of said motor and pump for actuating said mechanism tomove said device successively from one of said operating positions toanother and to said safety position, a valve for controlling ltheoperations'of said mechanism by both said pump and said independentmeans, an operating electricalcircuit for said motor, a plurality ofremotely controlled electrical circuits, including a remotely controlledelectrical circuit for each of said operating positions, means in eachremotely controlled electrical circuit actuable when the correspondingremotely controlled circuit is closed to energize said motor to positionsaid valve so that said pump can actuate said mechanism to move saiddevice to the corresponding operating position and so that said valvecan retain the ydevice in said mentioned operating position as long assaid corresponding` remotely4 controlled circuit lremains energized,said last mentioned means being actuable when all of said remotelycontrolled circuits are deenergized to position said valve so that saidindependent means can actuate said device to said safety position, andmeans for breaking said motor operating circuit when said mechanism ismoved by said motor to position seid device in an operating position.

EVERETT H. WHITE.

